Home / 212,119.46-318,111.96-71,845.28

Finding the Fourth Proportional to 212,119.46, 318,111.96 and 71,845.28

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Solution

The fourth proportional to 212,119.46, 318,111.96 and 71,845.28 is: 107,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,119.46 : 318,111.96 = 71,845.28 : x
  2. Step 2: Convert to fraction form
    212,119.46/318,111.96 = 71,845.28/x
  3. Step 3: Cross multiply
    212,119.46x = 318,111.96 × 71,845.28
  4. Step 4: Simplify right side
    212,119.46x = 22,854,842,837.55
  5. Step 5: Solve for x
    x = 22,854,842,837.55/212,119.46
  6. Step 6: Final answer
    x = 107,745.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.